The biophilia hypothesis suggests that there is an instinctive bond between humans beings and other living systems. Edward O. Wilson introduced and popularized the hypothesis in his book entitled Biophilia.[1]

The term "biophilia" literally means "love of life or living systems." It was first used by Erich Fromm to describe a psychological orientation of being attracted to all that is alive and vital.[2] Wilson uses the term in the same sense when he suggests that biophilia describes "the connections that human beings subconsciously seek with the rest of life.” He proposed the possibility that the deep affiliations humans have with nature are rooted in our biology. Unlike phobias, which are the aversions and fears that people have of things in the natural world, philias are the attractions and positive feelings that people have toward certain habitats, activities, and objects in their natural surroundings. Human preferences toward things in nature, while refined through experience and culture, are hypothetically the product of biological evolution.

For example, adult mammals (esp. humans) are generally attracted to baby mammal faces and find them appealing across species. The large eyes and small features of any young mammal face are far more appealing than those of the mature adults. The biophilia hypothesis suggests that the positive emotional response that adult mammals have toward baby mammals across species helps increase the survival rates of all mammals.

Similarly, the hypothesis helps explain why ordinary people care for and sometimes risk their lives to save domestic and wild animals; regularly visit zoos and state parks and keep plants and flowers in and around their homes. In other words, our natural love for life helps sustain life.